Sheffield adopt a dog: Kai the 'boisterous' German Shepherd cross has been waiting for a home for 18 months
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Now, Mill House Animal Sanctuary is searching for the right owner to put Kai's lonely days to an end and take him home for good.
But the team stresses that not just anyone will be able to take the big 'boisterous' boy home - they will need to be up to a challenge.
"Kai is a gentle giant when it comes to people, showering them with affection and warmth," said volunteer Charlotte Rae at Mill House Animal Sanctuary.
"However, his reactivity towards other animals has posed challenges in finding him a suitable forever home."
Charlotte says between Kai's big size, horse-like strength and tendency to strain on the lead around other animals, he will need a skilled owner with the ruggedness and experience to break him out of his old habits and train him to be the companion everyone at the sanctuary knows he can be.
"With the right training and care, we believe Kai has the potential to become a wonderful companion," said Charlotte.
"We've all just got sad at seeing him at the sanctuary still after all this time.
"Most dogs that come here are scooped up in a week, but Kai is still here after 18 months.
"But it's like no one seems interested in him. He seems depressed watching everyone else come and go. His little face makes me so sad.
"He needs a home."
For more information to enquire about adopting Kai, visit Mill House Animal Sanctuary's Facebook page at: https://www.facebook.com/animalsheltersheffield/